an L Guard for male batsmen and wicket-keepers (often referred to as a cup, box or abdo guard). It is usually constructed from high density plastic with a padded edge, shaped like a hollow half-pear, and inserted into the jockstrap with cup pocket underwear of the batsmen and wicket-keeper. This is used to protect the crotch area against impact from the ball.
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Blackadder: Where's that George? It's three o'clock in the morning, he should be careful wandering the trench at night with nothing to protect his honour but a cricket box.